Unique identifier of an entry. For example, 'def_123456' or '67890abcdef'.

Name of definition of custom field. For example, 'Warranty Period' or 'Custom Size'.

Data type of the custom field. For example, 'text', 'number', 'boolean', or 'date'.

Key of custom field inside custom object. For example, 'warranty_period' or 'custom_size'.